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Finding the Fourth Proportional to 61,476.60, 91,996.20 and 42,668.40

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Solution

The fourth proportional to 61,476.60, 91,996.20 and 42,668.40 is: 63,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,476.60 : 91,996.20 = 42,668.40 : x
  2. Step 2: Convert to fraction form
    61,476.60/91,996.20 = 42,668.40/x
  3. Step 3: Cross multiply
    61,476.60x = 91,996.20 × 42,668.40
  4. Step 4: Simplify right side
    61,476.60x = 3,925,330,660.08
  5. Step 5: Solve for x
    x = 3,925,330,660.08/61,476.60
  6. Step 6: Final answer
    x = 63,850.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.